Benno M. Nigg

Benno M. Nigg
The University of Calgary | HBI · Faculty of Kinesiology

About

392
Publications
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Publications

Publications (392)
Article
There is extreme interest surrounding the influence of advanced running footwear on running performance. The magnitude, timing, and location of mechanical energy storage and return in footwear may elucidate one way footwear influences running performance. However, the complexity of footwear makes it challenging to model footwear energy storage and...
Article
This study compared electromyography of five leg muscles during a single walking task (WALK) to a dual task (walking + cognitive task; COG) in 40 individuals (20 M and 20 F) using a wavelet analysis technique. It was hypothesized that muscle activation during the dual task would differ significantly from the walking task with respect to both timing...
Article
Full-text available
Ground reaction forces (GRFs) describe how runners interact with their surroundings and provide the basis for computing inverse dynamics. Wearable technology can predict time−continuous GRFs during walking and running; however, the majority of GRF predictions examine level ground locomotion. The purpose of this manuscript was to predict vertical an...
Article
Human movement patterns were shown to be as unique to individuals as their fingerprints. However, some movement characteristics are more important than other characteristics for machine learning algorithms to distinguish between individuals. Here, we explored the idea that movement patterns contain unique characteristics that differentiate between...
Article
Full-text available
Human gait is as unique to an individual as is their fingerprint. It remains unknown, however, what gait characteristics differentiate well between individuals that could define the uniqueness of human gait. The purpose of this work was to determine the gait characteristics that were most relevant for a neural network to identify individuals based...
Article
Lateral shuffles are common movements in sports and are facilitated by the hip, knee, and ankle joints. Shoe uppers can change ankle kinetics during walking and running. However, it is not known how shoe upper modifications affect ankle kinetics during shuffling. The purpose of this study was to investigate the effects of shoe upper construction on...
Article
Full-text available
Background: The ankle and foot together contribute to over half of the positive and negative work performed by the lower limbs during running. Yet, little is known about how foot kinetics change throughout a run. The amount of negative foot work may decrease as tibialis anterior (TA) electromyography (EMG) changes throughout longer-duration runs....
Article
Full-text available
Purpose To investigate whether there is a systematic change of leg muscle activity, as quantified by surface electromyography (EMG), throughout a standard running footwear assessment protocol at a predetermined running speed. Methods Thirty-one physically active adults (15 females, 16 males) completed 5 testing rounds consisting of overground runn...
Article
Full-text available
In recent years, increasing the midsole bending stiffness (MBS) of running shoes by embedding carbon fibre plates in the midsole resulted in many world records set during long-distance running competitions. Although several theories were introduced to unravel the mechanisms behind these performance benefits, no definitive explanation was provided s...
Article
Full-text available
Objective: To investigate if changing the midsole bending stiffness of athletic footwear can affect the onset of lower limb joint work redistribution during a prolonged run. Methods: Fifteen trained male runners (10-km time < 44 min.) performed 10-km runs at 90% of their individual speed at lactate threshold (i.e., when change in lactate exceeded...
Chapter
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Customized insoles are commonly prescribed to prevent or treat a variety of foot pathologies and to reduce foot and lower limb fatigue. Due to the patient-specific design and production of such orthotics, the concept of self-selected customized orthotics (SSCO) has recently been developed. The goal of this study was to assess the impact of SSCO tec...
Article
Full-text available
Studies on the paradigm of the preferred movement path are scarce, and as a result, many aspects of the paradigm remain elusive. It remains unknown, for instance, how muscle activity adapts when differences in joint kinematics, due to altered running conditions, are of low / high magnitudes. Therefore, the purpose of this work was to investigate ch...
Article
Full-text available
Matching running footwear features to the functional needs of specific groups of runners stratified according to their training status or running experience has the potential to improve footwear preference, enhance running performance, and reduce the risk of running-related injuries. The complexity of modern running shoes in combination with the va...
Conference Paper
Full-text available
Prolonged running has been shown to result in a redistribution of positive lower limb joint work from distal to proximal joints. Running footwear with increased midsole bending stiffness (MBS) has been shown to redistribute lower limb joint work from proximal to distal joints. How increased MBS of running shoes can affect joint work redistribution...
Article
Full-text available
Background Individual compliances of the foot-shoe interface have been suggested to store and release elastic strain energy via ligamentous and tendinous structures or by increased midsole bending stiffness (MBS), compression stiffness, and resilience of running shoes. It is unknown, however, how these compliances interact with each other when the...
Article
Purpose: Cumulative load has become a popular metric in running biomechanics research to account for potential spatiotemporal changes associated with different locomotion strategies. This study investigated how incorporating mechanical fatigue principles into Achilles tendon cumulative load measurements affected their relationship with running spe...
Article
Introduction: Soft tissue vibrations can generate discomfort and may necessitate a greater energy demand to preserve an efficient motion in running. Vibration damping is thus of interest from a comfort and performance standpoint. Our purpose was to assess whether changes in midsole material affect the properties of (a) soft tissue vibrations and (...
Poster
Full-text available
The purposes of this study were to investigate how the arch of the human foot contributes to jump height and how its mechanics are affected by increased midsole bending stiffness. 10 male participants performed 5 countermovement jumps in a control (1.2 N/mm) and a stiff (11.9 N/mm) shoe condition. Lower limb joint and plantar muscle-tendon unit (...
Poster
Full-text available
The purpose of this study was to investigate the influence of midsole bending stiffness of sport shoes on the mechanics of the human foot arch during running. 13 male, recreational runners performed 30 seconds of treadmill running at 3.5 m/s in a control (1.2 N/mm) and stiff (11.9 N/mm) condition. The mechanics of a plantar muscle-tendon unit (pM...
Article
Lateral ankle stability and how it changes in different footwear has been investigated for years. Research, however, has shown a lack of reliability or sensitivity of available methodologies. This study aimed to evaluate the test-retest reliability and sensitivity of a novel lateral stability protocol, the Submaximal Lateral Shuffle Test (SLST). We...
Article
Objectives: To investigate if lower limb joint work is redistributed when running in a shoe with increasedmidsole bending stiffness compared to a control shoe. Design: Within-subject with two conditions: (1) commercially available running shoe and (2) the sameshoe with carbon fibre inserts to increase midsole bending stiffness. Methods: Thirteen...
Article
Full-text available
Background: Six experts in the field of running-related research have critically addressed a proposal to abandon the paradigms of ‘impact force’ and ‘pronation control’ when investigating running shoes, running injury, and running performance. Further, these experts have commented on the suggestion of the new paradigms of ‘muscle tuning’ and the ‘p...
Article
The purpose of this study was to determine the degree of co-contraction as per electromyographic gamma-band intermuscular coherence of the quadricep (Q) and hamstring (H) muscles during single-leg squatting (SLS), and to assess the influence of sex and self-reported knee complaints on the association between knee injury history and medial and later...
Article
Abnormal muscle activation patterns during gait following knee injury that persist past the acute injury and rehabilitation phase (> three years) are not well characterized but may be related to post-traumatic knee osteoarthritis. The aim was to characterize the abnormal muscle activity from electromyograms of five leg muscles that were recorded du...
Article
Altering torsional stiffness of cycling shoe soles may be a novel approach to reducing knee joint moments and overuse injuries during cycling. We set out to determine if the magnitude of three-dimensional knee moments were different between cycling shoe soles with different torsional stiffnesses. Eight trained male cyclists cycled at 90% lactate th...
Article
Full-text available
It has been proposed that during walking and running the body has strategies to minimize the soft tissue vibrations. The concept of muscle tuning suggests that muscle activity changes in response to the input signal to modify the frequency and damping of such vibrations. Although it has been demonstrated for continuous vibrations and single impacts...
Article
The soccer kick is the most prominent movement in soccer. Kicking performance depends on two major factors: kicking accuracy and ball speed. During the soccer kick, momentum is transferred from the foot/cleat to the ball. This interplay between the foot/cleat and the ball can be modelled as a mixture of ‘impulse-like’ and ‘throwing-like’ components...
Article
One method to determine the forces produced during running is to conduct extensive kinematic and kinetic analysis. These analyses can be performed by having an individual perform repeated over-ground running trials or simply run continuously on an instrumented treadmill. The forces produced during over-ground running may not be the same as the forc...
Article
Full-text available
By means of biofeedback, neuromotor control can be modified. Recent biofeedback experiments have used the power of the electromyogram of one muscle in different frequency bands to control a two-dimensional cursor. However, the human body usually requires coherent activation of multiple muscles to achieve daily life tasks. Additionally, electromyogr...
Data
Frequency response, cross-talk coherence, time-domain analysis, biofeedback coherence. (XLSX)
Article
Full-text available
The vasti muscles stabilize the knee joint during the running movement. This requires some motor units to synchronize. Test the hypothesis that EMGs from the vasti muscles (VM and VL) are coherent in four frequency bands, one below 30 Hz, the 40 Hz (30–45 Hz), the middle band up to 120 Hz, and the high-frequency band (135–280 Hz). Because the VM du...
Poster
Full-text available
The purpose of this study was to investigate the influence of midsole bending stiffness (MBS) of soccer cleats on ball speed. 20 male, recreational soccer players performed 6 maximum effort instep kicks in 5 stiffness conditions. There was no systematic effect of MBS of soocer cleats on ball speed when all participants were grouped. Numerically, ho...
Article
Full-text available
Introduction: The vasti muscles have to work in concert to control knee joint motion during movements like walking, running, or squatting. Coherence analysis between surface electromyography (EMG) signals is a common technique to study muscle synchronization during such movements and gain insight into strategies of the central nervous system to opt...
Article
Full-text available
Purpose: To wavelet transform the electromyograms of the vastii muscles and generate wavelet intensity patterns (WIP) of runners. Test the hypotheses: 1) The WIP of the vastus medialis (VM) and vastus lateralis (VL) of one step are more similar than the WIPs of these two muscles, offset by one step. 2) The WIPs within one muscle differ by having m...
Data
High-resolution version of Fig 5. Hierarchical clustering of the intensity patterns recorded from 1221 steps of subject # 4. VM (Top left) and VL (Top right) and for 1221 surrogate patterns of VM (Bottom left) and of VL (Bottom right). (TIF)
Article
Full-text available
Optimal feedback control theory suggests that control of movement is focused on movement dimensions that are important for the task's success. The current study tested the hypotheses that age effects would emerge in the control of only specific movement components and that these components would be linked to the task relevance. Fifty healthy volunt...
Data
Exemplary realization of PM7–PM9 of the first subject of the younger age group.
Data
Exemplary realization of PM1–PM3 of the first subject of the younger age group.
Data
Exemplary realization of PM4–PM6 of the first subject of the younger age group.
Article
Full-text available
During dynamic or sustained isometric contractions, bursts of muscle activity appear in the electromyography (EMG) signal. Theoretically, these bursts of activity likely occur because motor units are constrained to fire temporally close to one another and thus the impulses are “clustered” with short delays to elicit bursts of muscle activity. The p...
Article
Despite the frequent use of the electromyography-based muscle co-contraction index (CCI) to examine muscular control of the knee joint in young adults with and without knee injury history, the reliability of the CCI in this population is unknown. The purpose of this study was to quantify within-day and between-day reliability of the knee muscle CCI...
Article
Footwear comfort is an important factor in design, purchase and use of running shoes but current measures require multiple subjective assessments. Therefore, an objective and more reliable surrogate measure of footwear comfort would be of high relevance. In other research fields, perceived comfort was found to influence the variability of movement...
Article
Purpose: (a) to quantify differences in lower extremity joint kinematics for groups of runners subjected to different running footwear conditions, and (b) to quantify differences in lower extremity joint kinematics on an individual basis for runners subjected to different running footwear conditions. Methods: Three-dimensional ankle and knee joi...
Article
Full-text available
It has been suggested that increasing muscle strength could help reducing the frequency of running injuries and that a top-down approach using an increase in hip muscle strength will result in a reduced range of movement and reduced external moments at the knee and ankle level. This paper suggests, that a bottom-up approach using an increase of str...
Article
Full-text available
Trial registration: NCT01900262. A total of 52 of the 129 (40%) novice runners experienced at least one running related injury: 21 in the functional strength training program, 16 in the resistance strength training program and 15 in the control stretching program. Injury rates did not differ between study groups [IR = 32.9 (95% CI 20.8, 49.3) in t...
Article
Despite the common knowledge about the individual character of human gait patterns and about their non-repeatability, little is known about their stability, their interactions and their changes over time. Variations of gait patterns are typically described as random deviations around a stable mean curve derived from groups, which appear due to nois...
Article
Comfort is an important aspect of athletic footwear since it has been associated with health and performance benefits. Footwear comfort is also a key consideration in orthotic therapy during the prescription/fitting process of foot orthoses. However, little is known about the actual ability of individuals to reliably assess footwear-related comfort...
Conference Paper
Full-text available
BACKGROUND AND AIM: Intermuscular motor unit synchronization (IMUS) is typically described using a Fourier-based coherence analysis between two EMG signals. Such analyses have demonstrated that IMUS between quadriceps muscles is task-dependent with enhanced synchronization during dynamic tasks. Within a dynamic task, the varying biomechanical condi...
Article
The purpose of this study was to investigate the effects of soccer shoes with differing bending stiffness on physiological and performance variables in a game-like situation. A sample of 13 male soccer players was recruited to complete this study. Three soccer shoes with different forefoot bending stiffness (low, medium, high) were compared using a...
Article
Full-text available
This study investigated the effects of a high intensity cycling exercise on changes in spectral and temporal aspects of electroencephalography (EEG) measured from ten experienced cyclists. Cyclists performed a maximum aerobic power test on the first testing day followed by a time to exhaustion trial at 85% of their maximum power output on two subse...
Article
Full-text available
Purpose: Motor unit activity is coordinated between many synergistic muscle pairs but the functional role of this coordination for the motor output is unclear. The purpose of this study was to investigate the short-term modality of coordinated motor unit activity-the synchronized discharge of individual motor units across muscles within time inter...
Article
Full-text available
Previous research on elderly people has suggested that footwear may improve neuromus-cular control of motion. If footwear does in fact improve neuromuscular control, then such an influence might already be present in young, healthy adults. A feature that is often used to assess neuromuscular control of motion is the level of gait asymmetry. The obj...
Data
The purpose of this study was to identify the influence of different magnitudes and directions of the vibration platform acceleration on surface electromyography (sEMG) during whole-body vibration (WBV) exercises. Therefore, a WBV platform was used that delivers vertical vibrations by a side-alternating mode, horizontal vibrations by a circular mod...
Article
This study presents a new approach for automated identification of ice hockey skating strides, and a method to detect ice contact and swing phases of individual strides by quantifying vibrations in 3D acceleration data during the blade-ice interaction. The strides of a 30 m forward sprinting task, performed by six ice hockey players, were evaluated...
Article
Electrical signals encoding different forms of information can be observed at multiple levels of the human nervous system. Typically, these signals have been recorded in a rather isolated fashion with little overlap between the static recordings of electroencephalography (EEG) commonly used in neuroscience and the typical surface electromyography (...